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经营范围
发明名称
Wear bushing retrieval tool.
摘要
申请公布号
EP0391541(B1)
申请公布日期
1994.05.18
申请号
EP19900302473
申请日期
1990.03.08
申请人
COOPER INDUSTRIES INC.
发明人
GARBETT, KEITH
分类号
E21B33/03;E21B17/10;E21B17/12;E21B23/00;E21B31/20;(IPC1-7):E21B23/00
主分类号
E21B33/03
代理机构
代理人
主权项
地址
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